EP1137189A3 - A high power selective signal attenuator and method of attenuation - Google Patents

A high power selective signal attenuator and method of attenuation Download PDF

Info

Publication number
EP1137189A3
EP1137189A3 EP01302216A EP01302216A EP1137189A3 EP 1137189 A3 EP1137189 A3 EP 1137189A3 EP 01302216 A EP01302216 A EP 01302216A EP 01302216 A EP01302216 A EP 01302216A EP 1137189 A3 EP1137189 A3 EP 1137189A3
Authority
EP
European Patent Office
Prior art keywords
analog
output
attenuator
digital
attenuation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP01302216A
Other languages
German (de)
French (fr)
Other versions
EP1137189A2 (en
Inventor
Arild Kolstrud
Christopher F. Zappala
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia of America Corp
Original Assignee
Lucent Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of EP1137189A2 publication Critical patent/EP1137189A2/en
Publication of EP1137189A3 publication Critical patent/EP1137189A3/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging
    • H03M1/181—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values
    • H03M1/183—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter
    • H03M1/185—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging in feedback mode, i.e. by determining the range to be selected from one or more previous digital output values the feedback signal controlling the gain of an amplifier or attenuator preceding the analogue/digital converter the determination of the range being based on more than one digital output value, e.g. on a running average, a power estimation or the rate of change

Abstract

A high-power selective signal attenuator (2) includes an attenuator (12) attenuating analog main signals, and a first analog-todigital converter (16) converting output of the attenuator to digital. A digital-to-analog converter (18) reconverts the digital output of the first ADC to analog, and a cancellor (24) receives the main signals and the analog output from the DAC. The cancellor (24) cancels the analog output of the DAC from the main signals to substantially eliminate highpower signals. A second ADC (28) receives the output of the cancellor and generates a digital output. Based on the digital output, control circuitry (32) dynamically controls the attenuation of the attenuator (12) to prevent saturation of the second ADC and to improve information throughput.
EP01302216A 2000-03-22 2001-03-12 A high power selective signal attenuator and method of attenuation Ceased EP1137189A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US533109 2000-03-22
US09/533,109 US6515599B1 (en) 2000-03-22 2000-03-22 High-power selective signal attenuator and method of attenuation

Publications (2)

Publication Number Publication Date
EP1137189A2 EP1137189A2 (en) 2001-09-26
EP1137189A3 true EP1137189A3 (en) 2004-01-02

Family

ID=24124519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01302216A Ceased EP1137189A3 (en) 2000-03-22 2001-03-12 A high power selective signal attenuator and method of attenuation

Country Status (7)

Country Link
US (1) US6515599B1 (en)
EP (1) EP1137189A3 (en)
JP (1) JP2001313567A (en)
KR (1) KR100850053B1 (en)
CN (1) CN1217488C (en)
BR (1) BR0101070A (en)
CA (1) CA2337601C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6707402B1 (en) * 2000-02-11 2004-03-16 Georg Neumann Gmbh Method for converting an analog signal to a digital signal
FR2918821B1 (en) * 2007-07-10 2009-11-20 Thales Sa FREQUENCY SELECTIVE ATTENUATOR
US8548105B2 (en) 2008-08-05 2013-10-01 Qualcomm Incorported Joint time-frequency automatic gain control for wireless communication
CN103795395B (en) * 2014-01-20 2016-05-04 海能达通信股份有限公司 A kind of mould electric installation for anti-shake slot synchronization
RU2631021C1 (en) * 2016-04-15 2017-09-15 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Томский государственный университет систем управления и радиоэлектроники" Discrete attenuator of microwave
EP4235952A3 (en) * 2018-12-28 2023-11-08 Google LLC Attenuator for qubit drive signals

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US5410750A (en) * 1992-02-24 1995-04-25 Raytheon Company Interference suppressor for a radio receiver
EP0874469A2 (en) * 1997-04-03 1998-10-28 AT&T Corp. Weak signal resolver
US5877653A (en) * 1995-11-16 1999-03-02 Samsung Electronics Co., Ltd. Linear power amplifier and method for removing intermodulation distortion with predistortion system and feed forward system

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US3600204A (en) 1968-05-31 1971-08-17 Corning Glass Works Glass-ceramic article prepared from low expansion thermally devitrifiable glass frit
NL7403034A (en) 1973-03-21 1974-09-24
GB1558452A (en) * 1976-12-20 1980-01-03 Japan Broadcasting Corp Analogue to digital converting device
US4209229A (en) 1978-09-25 1980-06-24 Corning Glass Works Glass-ceramic coated optical waveguides
US4397670A (en) 1981-10-05 1983-08-09 Corning Glass Works Method of making alkali metal, calcium fluorosilicate glass-ceramic articles
US4539566A (en) * 1982-11-04 1985-09-03 Texas Instruments Incorporated Automatic interference canceling apparatus
US4709215A (en) * 1985-12-30 1987-11-24 Hughes Aircraft Company Traveling wave tube drive controller
JPH07118649B2 (en) * 1986-01-08 1995-12-18 ヤマハ株式会社 Dither circuit
US5042898A (en) 1989-12-26 1991-08-27 United Technologies Corporation Incorporated Bragg filter temperature compensated optical waveguide device
JPH0466826U (en) * 1990-10-16 1992-06-12
US5186729A (en) 1991-04-26 1993-02-16 Center For Innovative Technology Method of making in-situ whisker reinforced glass ceramic
JP3168620B2 (en) * 1991-07-03 2001-05-21 ソニー株式会社 Digital / analog converter
DE69220558T2 (en) * 1991-12-18 1997-11-13 Texas Instruments Inc System for increasing the dynamics of a receiver
FR2704110B1 (en) * 1993-04-16 1995-07-13 Balestro Freddy SIGNAL PROCESSING DEVICE USING MULTIPLE DIFFERENT FILTERING, IN PARTICULAR FOR AUDIO FREQUENCY CODING OF VOICE SIGNALS.
US5392042A (en) * 1993-08-05 1995-02-21 Martin Marietta Corporation Sigma-delta analog-to-digital converter with filtration having controlled pole-zero locations, and apparatus therefor
JPH08265073A (en) * 1995-03-20 1996-10-11 Fujitsu Ltd Agc circuit
US5673044A (en) * 1995-08-24 1997-09-30 Lockheed Martin Corporation Cascaded recursive transversal filter for sigma-delta modulators
JPH09181605A (en) * 1995-12-27 1997-07-11 Sony Corp Analog/digital conversion and digital/analog conversion device
US5721802A (en) 1996-06-13 1998-02-24 Corning Incorporated Optical device and fusion seal
AU733748B2 (en) * 1996-12-30 2001-05-24 Samsung Electronics Co., Ltd. Combined linear power amplifying device and method
US6317065B1 (en) * 1999-07-01 2001-11-13 Cisco Technology, Inc. Multiple A to D converters for enhanced dynamic range

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5410750A (en) * 1992-02-24 1995-04-25 Raytheon Company Interference suppressor for a radio receiver
US5877653A (en) * 1995-11-16 1999-03-02 Samsung Electronics Co., Ltd. Linear power amplifier and method for removing intermodulation distortion with predistortion system and feed forward system
EP0874469A2 (en) * 1997-04-03 1998-10-28 AT&T Corp. Weak signal resolver

Also Published As

Publication number Publication date
KR100850053B1 (en) 2008-08-04
CN1217488C (en) 2005-08-31
BR0101070A (en) 2001-11-06
CA2337601A1 (en) 2001-09-22
CA2337601C (en) 2004-05-25
US6515599B1 (en) 2003-02-04
KR20010092708A (en) 2001-10-26
CN1318902A (en) 2001-10-24
EP1137189A2 (en) 2001-09-26
JP2001313567A (en) 2001-11-09

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